Dating for 2 years; at a crossroads; should i dump him?

BF is 8 years older than me but looks 20 years older; he's overweight, says he wants to lose weight but gorges himself for dinner then sits on the couch and drinks 2-3 heavy beers almost every night. His appearance isn't the primary issue for me; it's the glutton behavior and lack of discipline, not to mention the fact that he's on several different meds for cholesterol, thyroid, etc. Exercise and portion control would help him greatly. Also have conflict resolution issues and significant differences in lifestyles. We've been dating for 2 years. Should I even try to put up with all of this any longer, or just call it quits?